The Ethnocare Underlay TT Closed is a transtibial sweat-management sleeve designed to help control moisture, heat and perspiration inside a below-knee prosthetic socket. Worn underneath the prosthetic liner, the Underlay uses Ethnocare’s proprietary moisture-management knit to help move sweat away from the residual limb, supporting a drier and more comfortable prosthetic interface. The Closed version provides the same moisture-management and antimicrobial performance as the open design, but with a sealed distal end. Ethnocare notes that this configuration can be particularly suitable for users with more bulbous residual-limb shapes or where clinicians want to avoid any effect from an open distal edge on fit or skin contact. Key Features Helps manage sweat, heat and moisture inside the prosthetic socket Worn underneath the prosthetic liner Closed distal end for full residual-limb coverage Proprietary moisture-management knit Antimicrobial performance Helps reduce moisture-related slippage and discomfort Supports a more stable and comfortable socket environment Particularly useful for active users and hot or humid climates Passive textile solution requiring no electronics or adjustment Available for low, moderate and high activity users Why Choose the Closed Version? The sealed distal design can be advantageous for users with bulbous residual limbs and for fittings where maintaining continuous material coverage at the distal end is preferred. It offers prosthetists an alternative to the Underlay TT Open while retaining the same core objective: helping keep the residual limb drier and improving comfort throughout the day. Prosthetic Compatibility The Ethnocare Underlay TT Closed is designed for transtibial / below-knee amputees and is compatible with: Distal fixation Suspension sleeves Passive vacuum Active / elevated vacuum It is suitable for K1 to K4 activity levels, from low-activity users through to highly active amputees. Materials Proprietary knit Available Circumference Sizes 23 28 35 Available Lengths Short (SH): 14–20 cm Long (LG): 28–32 cm Ideal for Hot Climates and Active Users Excessive perspiration inside a prosthetic liner can contribute to slipping, friction, odour, skin irritation and reduced socket stability. The Ethnocare Underlay TT Closed provides a simple way to manage moisture without altering the prosthetic socket or suspension system. For amputees living in hot and humid environments, working outdoors, exercising regularly or wearing their prosthesis for long periods, the Underlay TT Closed can help create a drier, more comfortable and more secure prosthetic interface.

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The Ethnocare Underlay TT Open is a transtibial sweat-management sleeve designed to help control humidity, perspiration, heat and odour inside a below-knee prosthetic socket. Worn under the prosthetic liner, the Underlay uses a proprietary moisture-management knit to help move sweat away from the residual limb and improve comfort during everyday wear, exercise and hot-weather conditions. Its open-ended design allows the liner to remain in direct contact with the skin where required for suspension, while the Underlay extends beyond the liner to encourage airflow and natural evaporation. Key Features Helps manage sweat, humidity, heat and odour inside the prosthetic socket Worn underneath the prosthetic liner Open-ended design maintains essential liner-to-skin contact Extends beyond the liner to support airflow and evaporation Helps keep the residual limb and liner drier during prolonged wear Can help reduce moisture-related slippage and discomfort Particularly useful for active users and people living in hot or humid climates Passive textile-based solution with no pumps, electronics or adjustment required Suitable for low, moderate and high activity levels Prosthetic Compatibility The Underlay TT Open is designed for transtibial / below-knee prosthetic users and is compatible with several common suspension methods, including: Distal fixation Suspension sleeves Passive vacuum Active / elevated vacuum Ethnocare specifies the product for users across K1 to K4 activity levels. Materials Proprietary moisture-management knit Available Circumference Sizes 23 28 35 Available Lengths Short (SH): 14–20 cm Medium (MD): 20–28 cm Long (LG): 28–32 cm Extra Long (XL) Ideal for Hot Climates and Active Users Sweat accumulation inside a prosthetic liner can affect comfort, suspension and skin condition, particularly during exercise, long working days or in warm environments. The Ethnocare Underlay TT Open provides a simple way to manage this moisture without changing the prosthetic socket or suspension system. For prosthetic users in regions such as the Middle East, Africa and South Asia, where high temperatures and humidity can make perspiration a significant daily challenge, the Underlay offers a practical addition to the prosthetic interface that can help make extended prosthesis use more comfortable and manageable. 

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The Ethnocare Overlay Light TT is a simplified transtibial volume-management solution designed specifically for NGO programmes, humanitarian projects and prosthetic distribution camps, where there may be only one opportunity to assess, fit and deliver a prosthesis. Its high-adjustability design provides up to 15-ply equivalent volume accommodation, giving clinicians greater flexibility when working with socket fit variations and residual-limb changes. This can help compensate for less precise socket volume, reduce the need for repeated follow-up appointments and extend the usable life of the prosthetic socket. For amputees, the Overlay Light TT can provide a more comfortable and forgiving fit as limb volume changes over time. For prosthetists and aid organisations, it offers a practical way to improve outcomes while reducing the cost and logistical burden associated with multiple fittings, socket modifications and early socket replacement. Key Benefits Designed for NGO, humanitarian and prosthetic camp applications Ideal where only one fitting appointment may be possible Provides up to 15-ply equivalent volume adjustment Helps accommodate variations in socket fit and residual-limb volume Can extend the functional life of the prosthetic socket Reduces reliance on repeated clinical adjustments Helps lower fitting, travel and follow-up costs Gives prosthetists greater flexibility where workshop resources are limited Supports a more comfortable and consistent experience for the amputee Simplified size range for easier stock management and programme deployment Designed for Challenging Fitting Environments In outreach and humanitarian settings, clinicians may have limited time, limited workshop facilities and little opportunity for future follow-up. The Overlay Light TT creates a larger adjustment window within the socket, helping the prosthesis remain functional even when the residual limb changes or the initial socket fit is not perfect. This makes it particularly valuable for high-volume prosthetic camps, mobile clinics, remote programmes and international aid projects, where reducing remakes and repeat appointments can significantly lower the overall cost per successful fitting. Available Sizes Reference Description OV23-XSH-L Overlay TT Size 23 – Extra Short OV23-SH-L Overlay TT Size 23 – Short OV28-SH-L Overlay TT Size 28 – Short Greater Flexibility. Fewer Appointments. The Ethnocare Overlay Light TT is designed to help prosthetic programmes achieve more reliable outcomes from a single fitting opportunity—providing additional tolerance for socket-volume variation, extending socket life and helping more amputees receive a comfortable, usable prosthesis with fewer clinical interventions.

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The Ethnocare Overlay TF is an innovative transfemoral prosthetic volume-management system designed to improve socket fit, stability and comfort for above-knee amputees experiencing residual-limb volume fluctuations. Using an air-expansion system, the Overlay TF allows the user to adjust socket fit as limb volume changes throughout the day. This can help maintain more consistent contact between the residual limb and socket, reduce unwanted movement and provide a practical alternative to relying solely on traditional prosthetic socks or repeated socket adjustments. Designed specifically for transfemoral amputees, the Overlay TF is compatible with a broad range of suspension methods, including pin lock, self-suspension, passive and active vacuum, seal rings, lanyard systems and cushion liners. Key Features Air-based residual-limb volume management Helps compensate for daily limb-volume fluctuations Supports improved socket fit, stability and comfort Allows users to adjust fit during the day Helps reduce unwanted movement within the socket Can reduce reliance on traditional sock-based volume management Compatible with multiple transfemoral suspension systems Suitable for low, moderate and high activity users Designed specifically for above-knee prosthetic applications Compatible Suspension Methods Pin lock Self-suspension Passive vacuum Active/elevated vacuum Seal rings Lanyard systems Cushion liners Activity Level Suitable for K1 to K4 prosthetic users, covering low, moderate and high activity levels. Materials Constructed from: Nylon Elastane TPU Spring steel Silicone Available Lengths Short: 19–24 cm Long: 24–32 cm Extra Long: 32+ cm — available for pin-lock configurations Available Circumference Sizes 32: 32–36 cm 38: 36–40 cm 40: 40–44.5 cm 44: 44.5–48 cm 48: 48–52 cm 52: 52–62 cm Clinical Application The Ethnocare Overlay TF is particularly suited to transfemoral amputees who experience changing residual-limb volume, socket looseness, pistoning or inconsistent fit during the day. By providing an adjustable interface between the residual limb and socket, the Overlay TF gives users greater control over socket fit while providing prosthetists with an additional tool for managing volume changes without immediately modifying or replacing the socket.

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The Ethnocare Overlay TT is an innovative transtibial prosthetic volume-management system designed to help compensate for changes in residual-limb volume throughout the day. Unlike traditional volume-management methods that rely on adding or removing prosthetic socks, the Overlay uses air-based adjustment to help improve socket fit, stability and comfort. The system is worn over the residual limb and allows the user to adjust fit as limb volume changes, helping maintain more consistent contact between the limb and socket. Designed for below-knee amputees, the Overlay TT can be used with a range of suspension systems including distal fixation, suspension sleeves, passive vacuum and active vacuum. It is suitable for users across K1 to K4 activity levels, making it a versatile option for both low-activity and highly active prosthetic users. Key Features Air-based residual-limb volume management Helps accommodate daily changes in limb volume Supports improved socket fit and stability May reduce the need to repeatedly add or remove prosthetic socks Allows users to adjust fit during the day Compatible with multiple prosthetic suspension systems Suitable for low, moderate and high activity levels Designed specifically for transtibial amputees Can be incorporated into existing prosthetic socket systems Compatible Suspension Methods Distal fixation Suspension sleeve Passive vacuum Active/elevated vacuum Activity Level Suitable for K1, K2, K3 and K4 prosthetic users. Materials Constructed from a combination of: Nylon Elastane TPU Spring steel Silicone Available Circumference Sizes OV23: 23.5–28.5 cm OV28: 28.5–35.5 cm OV35: 35.5–43.5 cm Available Lengths Short (SH): 14–20 cm Long (LG): 20+ cm Clinical Application The Ethnocare Overlay TT is particularly useful for transtibial users who experience residual-limb volume fluctuations, inconsistent socket fit, pistoning or changes in comfort during the day. By giving the user a practical way to manage socket volume, it can help maintain a more stable and comfortable prosthetic interface without requiring immediate socket modification or replacement.

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